The object hierarchy that OLE uses is odd, but it makes sense once you understand it.

Code has been tested and does work.

#!/Perl/bin/perl

use Win32::OLE

#Make new object
my $excel =  Win32::OLE->new('Excel.Application') or die "$!";

#Open the file
$excel->Workbooks->Open("c:\\test.xls") or die "$!";

#Get the chart collection..the Item method returns the nth
#item in the worksheets collection
$charts = $excel->Worksheets->Item(1)->ChartObjects();

#find out how many you have
$chart_count = $charts->{Count};

#loop and chage their left and top properties
#again the item property returns the nth item in the 
#charts list 
for(my $i=1; $i =< $chart_count; $i++)
{
    $charts->Item($i)->{Left}=XXXX;
    $charts->Item($i)->{Top}=XXXX
}
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